signal mapping on pushbutton signal clicked

[wagmare]

[offtop]
you can optimazi this code

connect(signalMapper, SIGNAL(mapped(int)), this, SIGNAL(clicked(int)));
connect(this, SIGNAL(clicked(int)), this, SLOT(changeIndex(int)));

connect(signalMapper, SIGNAL(mapped(int)), this, SIGNAL(clicked(int)));
connect(this, SIGNAL(clicked(int)), this, SLOT(changeIndex(int)));

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like this

connect(signalMapper, SIGNAL(mapped(int)), this, SIGNAL(changeIndex(int)));

connect(signalMapper, SIGNAL(mapped(int)), this, SIGNAL(changeIndex(int)));

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[/offtop]

could you post compilable code which reproduces a crash?

thanks for reply ...
sorry to the forum members ... i forget to initialize signalMapper
signalMapper = new QSignalMapper();
now its working ... sorry for this post ....